Magnetic brad-set.



c. H. PARKS. M Tlc BRAD sET.

APPLICA 0 FILED IAII.15, |914..

- Patented May-25,1915.

. 11:1.A ES H. PARKS, OF WATEBBURY, CONNECTICUT, ASSIGNOB. OF-VONE-HI'JFT0' DWIGHT S. GOODWIN, OF WATERBUBY, CONNECTECVUT.

mancia..

To all 'whom 'it may coneem Be it known that l, CHARLEsH. PARKS, acitizen ofthe United States, residing at Waterbury, in the county of NewHaven and '.State of Connecticut, have. invented certain or n is ofsmall diameter and for settin the same below the surface of the wood anwhich is at the same time relatively small and com act in size and whichis eiicient and relia le in use.

In the accompanying drawing, Figure 1 is a side-elevation of my improvedmagnetic 'brad-set. Fig. 2 isa longitudinal section'of shown in sideelethe same, the brad bein vation. Fig. 3 is a sim' ar view of the samewith the parts moved from the position shown in Fig. 2, the wood orboard being also in section. 4

My magneticy brad-set comprises a shelllike body l which is'an elongatedcylindrical structure, the outer end 11' of whichmay be tapered, andhaving a bore extending throughout the length, the portion 12 of thesaid bore at the said outer end 11 being of uite small diameter such asto be a-sliding t for the brad 13 or nailt'obe operated on and theportion 14 ofthe said bore extending along the remainder and major partofthe length being of considerably greater diameter. 'llhe side Wallistudinal slot 15.

A ram is eratively housed in the body and comprlses a main `body 16 atthe inner end that is of a diameter such as to be a sliding it for the"inner and larger portion provided with a longi- V14 of the bore andwhich at the outer end 17 bore., A radial y p main body 16 whlch engageswith-the ot 15.

is of a diameter such as to' be a slidin l it for the outer and smallerprtion. -12 o the bore and which intermediate'the said ends comprises abody extension liwhi'ch is jot slightly reduced diameter relatively tdthe main-body 16 so as to accommodate or house a spring 19 between thesame and the o osed wall ofthe larger portion 14 of t e in 20 isprovided A recessed handle 21 1s provided on the r f n inner end of themain body 16 com- Specication of Letters Patent.

the

stitutes the loading chamber, and the same is of a diameter as alreadymentioned to slidably receive the brad 13' and is of a length to housethe brad and also to receive and house the extreme outer end of thereduced portion 17 of the ram, and which latter is ositioned thereinwhenthe ram isat the inltial or normal position. The outerend 17- of theram serves as the ham "er head Patented May 25, 1915. Application ledJanuary 15, 1914. Serial Ito. 812,271. r

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and is of sufficient length to extend hrough the loading chamber 12 whenthe ram is moved forwardly to the driving position to the extreme amountpermissible and to extend beyond the said loading chamber 12 and the end11 of the body 10 by an .amount to correspond to the amount it isdesired to set the brad 13 below the surfhce 25 of the wood or board 26.The movement of the ram is limited by the pin 20 engaged with the Slot15.

4 The larger portion 14 of .the bore serves as an operating cylinder forthe ram body composed of the main body-16 and the body extension 18 andthe spring 19 which is mounted on the ram and positioned between themain body 16 and theouter end of the` cylinder 14.

The reduced portion of the ram body or body extension 18 is of suchreduced diameter and length asis necessary to provide .a housing for thespring 19 when the ram 1s moved to thelimit to the driving position, asshown in :Fi 3, and in this posltlon the ram is essentia ly in abutmentwith the end` of lthe cylinder 14. Accordingily, as described, the rambody substantia 1y iills the cylinder 14 and extends suiiciently beyondthe same at the inner end the handle 21.

#The handle extension 23 covers the e'x-4 treme inner end of thecylinder body 10 l1n the initial position, asshown -in Fig. 2, and asthe ram is moved from the said position the said extreme end enters therecess 24 correspondingly.

The ram 1s magnetized so that the brad 13 is held engaged with thehammer 17 bv ma etic attraction.

am aware of the tact that magnetic deto be embedded in vices have beenmade for driving nails'or carpet tacks and which have relatively lar eheads.' Such devices do not involve the di culties of a device, such asdescribed, for successfully driving such small bodies as n brads. I havesucceeded in producing a demits of making the device of compact form andat the same time provides-a handle of convenient size for handling thedevice.

I prefer to makethe shell body 10 and the nose 11 at the outer en'd ofbrass or other suitable non-magnetic material.

y This construction serves to maintain the magnetism in the driver orram indefinitely and also enables the operator to lay down 1 terial inwhich it may have been placed, as

i l hammer with the yform oi? a cylinder that-is appreciab Vtheinstrument when not in use, without the annoyance of the instrumentpicking up stray pleces of steel, nails or other loose mathe device willnot attract objects unless the ram is in forward-position, which cannever be except when being operated. l

It will be noted that the casing 10 is a unitary structure' and has abore composed of two portions, one of these, 14, bein in the yelongatedand of relatively large diameter, and the other, 12, being quite small.in diameter. The smaller bore portion, 12, is of proper length anddiameter to house the brad, 13, which latter is as usual of smalldiameter and has `a small head, and has additional length suiicient tohouse the free end Vof the parts in the normal position, as shown inFig. 2. In this position the major or body ortion of the hammer 17 itwill -benoted is oused in the main cylinder 14.

The ram is composed of the hammer 17 at one end, which fits the loadin'chamber 12 as described, and `the main .bo at the-other end, which fitst elongated and of relatively large `tion at one end that is also ram,the said handle comp y portion 16 e main cylinder 14 and intermediatethe said ends has the body extension 18. The said body extension 18 1sreduced relatively to the main body portion 16 and is of proper lengthto form with the opposed wall of the cylinder 14 a housing for thespring 19 with the parts at the position of the extreme outward movementof the ram, as shown in Fig. 3.

The magnetic body consists of the main body portion 16 and the extension18. That is to say that these are the parts relied upon to retain themagnetism, the hammer 17 serving virtually as a conductor of themagnetic lines of force to the brad. It will accordingly be noted thatthe said magnetic body is a maximum possible in bulk or mass, and thisfeature has an important bearing on the life of the lsame as regards theretention of the magnetism, and is particularly desirable in apercussion device, 1t bein understood that such a device is particu arlysusceptible to loss of its magnetism.

I claim as my invention In combination in a magnetic brad-set, a casinghaving a bore composed ofa main portion in the form of a cylinder,relatively diameter, and a reduced portion that is a .t for a brad ofrelatively small diameter, a ram of magnetic material, comprising a mainbody porelongated and is a fit forthe said cylinder, a hammer at theother end that is a t for the said reduced portion of the bore, and abody extension intermediate the said ends, a spring housed between thesaid extension and the walls of the tive movement of the said casing andram,

the outer end of the said ram overhan g the outer end of thepsaidcasing, and a andle mounted on the said outer end of the rising a bodyportion engaged with.and outer end of the ram and an extension that itsover and incloses the side walls of the said outer end of the casing,whereby the said main body portion of the ram is at al1 times inclosedand protected, and a handle is provided suitable for permitting maniulatmg the said brad-set conveniently w1th one hand.

. CHARLES H. PARKS. Witnesses: e

B. F. Gmmir, ELLA J. Moons.

mclosmg the said

